Vise.



` T.. c. MASSEY.

VISE.

APPLICATION FILED 00T. 19,1908.

927 ,988. Patented July 13, 1909',r

2 SHEETS-SHEET 1,

T. Cv. MASSEY.

VISB.

APPLICATION FILED oc'r. 19,1903.

927,988. Patented July 13,1909.

`2 SBEBTB-SHEET 2.

THOMAS C. MASSEY, OF CHICAGO, ILLINOIS.

VISE.

To all whom 'it may concern:

Be it known that I, Ti-ioMAs C. MAssnY, a citizen of the United States, residing at Oliicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Vises, of which the following is a specification.

My invention relates to improvements in vises, and has for its salient object to provide a device of Very light, strong construction, wherein the sliding jaw embodies parallel rods, sliding in guides provided in the stationary jaw, and connected at their rear ends by a carrier hung from side guides of the stationary jaw, and affording support for the shaft which operates the screw mechanism.

A further object of my invention is to pro'- vide a novel, quick-acting vise movement; and other and further objects of my invention will become apparent from the following description taken in conjunction with the accompanying drawings, in which;

Figure 1 is a perspective view of a device embodying my invention; Fig. 2 is a central longitudinal section therethrough; Fig. 3 is a rear end view; Fig. 1 is a section on line 4 4 of Fig. 2; Fig. 5 is a perspective view of the stationary aw turned upside-down; Fig. 6 is a plan view of the movable jaw; Fig. 7 is an enlarged sectional detail of the cam shaft and a screw-cam; Fig. 8 is an enlarged elevation of the screw-cam. Fig. 9 is an en larged cross sectional view of the shaft and cam spring looking toward the cam. Fig. 10 is a similar view of the shaft looking to the left toward the cam.

In my improved vise I provide a stationary jaw structure 10 comprising a vertical gripping plate or jaw proper 11, having proj ecting rearwardly from its lower extremity a short plate 12 from which extends rearwardly a relatively narrow tail piece 13. The plate 12 has depending therebelow four guiding ears, 14:, at its four corners provided with guiding apertures 15, and the side edges of the tail piece 13 extend downwardly and then outwardly to provide outturned side guiding-flanges 16 below the level of the central portion of the tail piece. The movable jaw, generally indicated at 17, provides a front plate 18, or jaw proper, from the lower corners of which extend rearwardly parallel bars 19, passing each through two alining guides 15 and rigidly connected together at their rear end by a carrier 20, which is pro- Specicaton of Letters Patent.

Application led October 19, 1908.

Patented July 13, 1909.

Serial No. 458,340.

vided at its upper side edges with inturned projections or fingers 21, to overlie and hang over the guiding iianges 16 of the stationary jaw.

The same construction may be used with different forms of operating mechanism, but I have herein shown an improved quick-acting screw-operating mechanism, which I will now describe.

22 indicates an operating shaft journaled in its front and rea-r ends in central bearings in the plate 18 and carrier 2O respectively, said shaft being provided with an operating handle 23 at its front end beyond the plate 18, and its rear end provided with a stoppin 23 arranged to coact with a stop lug 24 provided upon the rearward surface of the'carrier 20, so that the rotatability of the shaft is thereby limited. Upon the shaft 22, adjacent the carrier 20 I arrange a cam screw 26, having rotary lost motion on the shaft to the extent permitted by pin 27 extending through the shaft 22 and playing in a slot 28 in the reduced end 29 of the cam 26. The cam is provided. with threads 30 tapering at their leading ends, as at 31, and to permit slight movement in a direction toward the carrier 20, the end of the cam is recessed and has seated therein a coil spring', 33, bearing against the carrier 20, arranged to yieldingly resist such movement of the cam from its normal position in end-contact with pin 27.

Upon the under side of the stationary jaw `is formed or applied a stationary metal screw-rack, 35, with threads corresponding with the threads 30 of the cam, and arranged `to be engagedby the threads of the cam,

when the latter are brought upward by partial rotation of the shaft 22.

Now it will be seen that, in operation, when the handle 23 is turned in the direction of the arrow, Fig. 1, to bring the unthreaded part of the cam beneath the segmental rack or stationary threaded part, the movable jaw may be longitudinally slid in either direction, as there is no engagement to prevent sliding between-the rigid and stationary j aw members. After the movable jaw is slid to the approximate position to grip an article inserted between the movable and stationary jaws proper or plates 11 and 18, the handle is turned to the right from its upright position, as shown in Fig. 1, to bring the cam threads 3() into engagement with the rack threads on the stationary jaw, and further rotation forces the movable jaw toward the stationary jaw to tightly clamp they article to be held. In this action the ends 31 of the cam threads tend to produce smooth and certain engagement of the cam with the stationary rack, and the slight longitudinal yielding in proper direct-ion permitted of the cam by its sliding arrangement on the shaft 22 insures `a smooth engagement of the threaded parts which will not result in breakage of either thereof or binding of the cam against the stationary threads.

It will be observed that the frame construction heretofore described, providing a stationary jaw having at its front end relatively Widely spaced bearing apertures for the reception of rods, and laterally extending side guiding flanges in rear of said front guides, cooperating with the movable jaw, comprising longitudinal rods sliding through the guiding apertures of the stationaryjaw, and at their rear end connected by a transverse carrier hung upon and guided by the side flanges of the stationary jaw, atlords a construction of great simplicity and strength. The stationary jaw may be made of a single casting, with or without the rack, and without under-cut guides or cored parts of di'llicult construction, and its guiding and engaging parts are all easy of access for finishing work, while the parts of the movable jaw are of exceedingly light, simple construction.

IIVhile I have herein described in some deta'il a speciiic embodiment of my invention it will be understood that variations in the particulardetails of construction may be made .without departure from the spirit and scope of my invention, within the scope of the appended claims.

IIalving thus described my invention, what I claim and desire to secure by Letters Patent, of the United States, is;

l. In a vise, a stationary jaw providing depending apertured bearing parts, and elongated horizontal guiding tlanges in the rear thereof, a movable jaw, providing a vertical plate, parallel rods extending rearwardly from said plate through the guiding apertures in the stationary jaw, and a carrier connecting the rear ends of said rods h ung and guided upon the side guides of the stationary jaw.

2. In a vise, a stationary jaw affording a vertical plate and a horizontal tail piece, and providingwidely separated bearing earsv below the level of the tail piece, near the vertical plate, having guiding apertures therein,'and outwardly extending bearing flanges on the tail piece; a movable jaw comprising a vertical plate, rods extending rearwardly therefrom through the guiding apertures in said bearing ears and a carrier connecting the rear ends of saidrods, slidably hung on said bearing flanges; and operating means for locking the stationary and movable jaws together comprising a shaft ournaled in the vertical plate and carrier of the movable jaw. Y

Iin a vise a stationary jaw affording a vertical plate, a short horizontal plate and a tail piece extending rearwardly from said horizontal plate, there being depending cars at the four corners oit' said horizontal plate provided with guiding apertures, and outwardly extending bearing flanges on the side edges of the tail piece, a movable jaw comprising a vertical plate, rods extending rearwardly therefrom through said guiding apertures, and a carrier connecting the rear ends of said rods hung upon and sliding on said bearing fianges; a shaft journaled in said vertical plate and carrier of the movable `iaw, means for rocking said shaft, and means operated by said shaft for effecting the movable and stationary jaws in desired adjustment.

y 4l.. In a vise, a stationary jaw providing a threaded rack, a movable jaw carrying a shaft underlying said threaded rack, and a cam, mounted on said shaft and having limited longitudinal movement thereon, screw threaded a part only of its periphery for engagement with the rack threads.

In testimony whereof I hereunto set my hand in the presence of two witnesses.

THOMAS C. MASSEY. In the presence of- Forum RMN, MARY F. ALLEN. 

